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Re: [suse-security] SuSEFirewall doesn't work?
thanks everbody for your comments. I checked the version of my SuSEFirewall2
and it is not outdated. But thank you for that suggestion.
What I didn't know - oh bloody beginner! - is that the firewall "remembers"
outgoing requests and opens for the answers. OK, could have guessed that,
Just one more question: Is there any command or tool that can display which
services or programs are running on a certain port on my computer? If you
take a look at the following entry of my log file you will see that someone
from source port 80 is connecting to (or trying to?) my local port 1077. So I
am curious. Which software is running there, or at any other (high) port of
interest? Is there any way to find out? (OK, I know that there's a list of
ports and protocolls for low ports in /etc/protocolls; but what about higher
SuSE-FW-ACCEPT IN=eth0 OUT= MAC=00:a0:d1:d5:b4:3c:00:09:5b:a8:3e:c0:08:00
LEN=52 TOS=0x00 PREC=0x00 TTL=46 ID=2083 PROTO=TCP SPT=80 DPT=1077
WINDOW=7504 RES=0x00 ACK URGP=0 OPT (0101080A91D5DF560015679A)
On Monday 10 May 2004 22:01, Markus A. Radner wrote:
> Hi there!
> I have this weird problem with my SuSEFirewall2 on SuSE 9.0.
> I haven't opened any ports intentionally, but my log file says, that a lot
> of access attempts on highports get THROUGH the firewall.
> I have hundreds of entries like this in my /var/log/messages file:
> SuSE-FW-ACCEPT IN=eth0 OUT= MAC=00:a0:d1:d5:b4:3c:00:09:5b:a8:3e:c0:08:00
> SRC=213.165.x.x DST=192.168.0.2
> LEN=73 TOS=0x00 PREC=0x00 TTL=57 ID=16216 DF PROTO=TCP SPT=110 DPT=1435
> WINDOW=5792 RES=0x00 ACK PSH URGP=0 OPT (0101080A0A4992810070F15B)
> My computer is behind a router/firewall. Someone tries to connect at port
> 1435 (and a lot of different other highports as well!). I disabled access
> to highports and I only allowed DNS and DHCLIENT as valid services. At
> least this was what I was thinking! Here's all the settings of my
> SuSEFirewall2 file. If anybody could explain waht's going on I'd really be
> FW_LOG="--log-level warning --log-tcp-options --log-ip-option --log-prefix
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